User manual MKA 120
Conforms to
Issue 07.07.2021_01 Page 14
In order to avoid confusion, two further specifications can be added to the F-value, e.g. FC
121-10 (z-value), this means that at a core temperature of 121,1°C and a time of one minute,
the F-value = 1. If the temperature is increased by 10°C, the F-value increases 10-fold.
Example FC-value 121:
(
)
−
=
10
1
.
121
10
121
C
ature
coretemper
T
FC
Example FC-value 70:
(
)
−
=
10
70
10
70
C
ature
coretemper
T
FC
Hint
Depending on the setting, the nominal FC-value is shown as displayed below.
▪
FC70 (pasteurisation), see example FC-value 70
▪
FC121
(
sterilisation), see example FC-value121
.
▪
FC-UD, user defined settings
Be aware
Shut-down condition:
When the pre-programmed FC-value has been reached, the controller will automatically
switch into the next step or terminate the program, respectively.
5.6.3 Aggregate modules (direct relay actuation)
Up to 3 aggregate modules can be pre-programmed., thereby influencing the switching behaviour
of specific relays and the connected hardware (aggregates). The configuration determines which
nominal values may be entered and they can vary depending on the system. For example an
aggregate can be simply switched on or off, or the interval time of a clocking relay can be
changed.
Item 7.1.4 Optional nominal values, p.19
The names of the aggregate modules in standby, operating and programming mode are
generated from the relay names and shown in the display.
Actual interval times for the aggregate modules are shown during operation:
Actual status
Step time
Nominal value step time
Actual value 2
Nominal value 2
